The "ARL Annual Salary Survey, 2008-2009" reports salary data for all professional staff working in ARL libraries. The Association of Research Libraries (ARL) represents the interests of libraries that serve major North American research institutions. Data for 10,148 professional staff members were reported this year for the 113 ARL university libraries, including their law and medical libraries (941 staff members reported by 71 medical libraries and 743 staff members reported by 75 law libraries). For the 10 nonuniversity ARL members, data were reported for 3,748 professional staff members. The tables are organized in seven major sections. The first section includes Tables 1 through 4, which report salary figures for all professionals working in ARL member libraries, including law and medical library data. The second section includes salary information for the 10 nonuniversity research libraries of ARL. The third section, entitled "ARL University Libraries," reports data in Tables 7 through 25 for the "general" library system of the university ARL members, combining US and Canadian data but excluding law and medical data. The fourth section, composed of Tables 26 through 30, reports data on US ARL university library members excluding law and medical data; the fifth section, Tables 31-34, reports data on Canadian ARL university libraries excluding law and medical data. The sixth section (Tables 35-41) and the seventh section (Tables 42-48) report on medical and law libraries, respectively, combining US and Canadian data. Also included are: (1) University Library Questionnaire and Instructions; (2) Nonuniversity Library Questionnaire and Instructions; (3) Footnotes to the ARL Annual Salary Survey, 2008-2009; (4) ARL Member Libraries as of January 1, 2009; and (5) Table Numbering Changes for 1998-1999 to 1999-2000. (Contains 5 figures, 48 tables, and 5 footnotes.) [For the "ARL Annual Salary Survey, 2007-2008," see ED503126.]